--- zzzz-none-000/linux-4.9.276/include/linux/vmstat.h	2021-07-20 14:21:16.000000000 +0000
+++ falcon-5530-750/linux-4.9.276/include/linux/vmstat.h	2023-04-05 08:19:02.000000000 +0000
@@ -53,6 +53,10 @@
 
 extern void all_vm_events(unsigned long *);
 
+#if defined(CONFIG_AVM_POWERMETER)
+extern void __all_vm_events(unsigned long *ret);
+#endif /*--- #if defined(CONFIG_AVM_POWERMETER) ---*/
+
 extern void vm_events_fold_cpu(int cpu);
 
 #else